Examine source code of Looposer

{
  "manifest_version": 2,
  "name": "Looposer",
  "version": "1.0",
  "description": "Looposer lets you loop, transpose, and control the speed of any video in your browser. Perfect for learning songs, practicing instruments, or studying any video content.",
  "author": "Victor Raso",
  "homepage_url": "https://github.com/victorraso",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "https://rutube.ru/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "videoControl.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "looposer.html",
    "default_icon": {
      "48": "Icons/logo48.png"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "soundtouch-worklet.js"
  ],
  "icons": {
    "48": "Icons/logo48.png",
    "96": "Icons/logo96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "looposer@victorraso",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}